Single Line Electrical Diagram FFH LHR MRI
Existing Setup
2
1
Control and
Switch BUS
(CSB)
Wapda
Transformer
300kVA
0
3
Generator
250kVA
LT Panel with
ATS
4
1
Wapda
Grid
Wiring To
different
Rooms and
A/C units
DB1- MRI Area
7A,7B,7C…
.
MRI
Equipment
Room
6
5
Junction Box (JB2)
MRI Area Lighting
Sockets & A/C
7D
12D
Chiller
Pump-1
DB5
DB4-RF-Console
and pumps
DB2-UPS
and Chiller
Chiller
Pump-2
Spare
CB
10
Chiller-1
IN
MRI UPS
200 kVA
OUT
MRI
System
cabinets
DB3-MRI
DB
NA
9
Chiller-2
12A, B, C
11
8
DB6-Package
A/C
12E, F
Change over
Supplied with
System
Filter Panel
Wiring To
Control Room
and Fans
Cable Details
Cable# on
Drawing
Location / Route
Suggested Size
Comments
Cable Length (m) (Sectional Area in Sq
mm)
230 (common to CT
Transformer if
combined
Transformer
is used)
As supplied/ approved
by
Wapda
1
Grid (or CSB) to
transformer
2
Transformer to ATS
25
As supplied / approved
by
Wapda
3
Generator to ATS
115
Supplied with generator
as per load
4
ATS to DB-1 MRI Area
92
Supplied with generator
as per load
5
DB-1 to DB-2
31
4core, 155 Sq mm
(flexible)
6
DB-1 to Junction Box-2
14
7A
JB2 to Lighting (MRI
Area)
Internal Wiring
7B
JB2 to Outlets (MRI
Area)
Internal Wiring
7C
JB2 to Split A/C units
(MRI Area)
Internal Wiring
7D
JB2 to DB-6 for Package
A/C unit
Internal Wiring
4 core, 25 Sq mm
(flexible)
8
DB-2 to UPS IN
5
4core, 155 Sq mm
(flexible)
9
UPS OUT to DB3
6
4core, 155 Sq mm
(flexible)
10
DB-2 to chiller DB5
18+18
4 Core, 25 Sq mm
(Flexible)
11
DB-2 TO DB-3
17
4core, 25 Sq mm
(flexible)
12A
DB-4 to RF panel (lights)
Internal Wiring
12B
DB-4 to RF panel
(outlets)
Internal Wiring
12C
DB-4 to RF panel (PS)
Internal Wiring
12D
DB-4 to DB-5 (Pumps)
Internal Wiring
12E
DB-4 to Control Room
Outlets
Internal Wiring
12F
DB-4 to Fans
Internal Wiring
MRI DBs Input and Output Scheme
S/N
DB#
Incoming
Outgoing
JB-2 outgoing
DB-2
1
DB-1
ATS
2
DB-2
DB-1
3
DB-3
UPS-OUT
4
DB-4
DB-3
5
DB-5
6
DB-6
DB-2
DB-4
JB-2
JB-2
UPS-IN
DB-5
MRI SYSTEM
DB-4
RF PANEL- RF ROOM
LIGHTS
RF PANEL- RF ROOM
OUTLETS
RF PANEL-RF PS
DB-5
CHILLER
CHILLER PUMPS
PACKAGE TYPE A/C
Block Diagram
MRI Area Lighting
MRI Area Outlet
MRI Area Split A/C
MRI RF room Package
A/C